BinaryMapping also inherit from MultiFieldMapping

Author: gmarz

Diff for: src/Nest/Domain/Mapping/Descriptors/BinaryMappingDescriptor.cs

@@ -4,7 +4,7 @@
 
 namespace Nest
 {
-	public class BinaryMappingDescriptor<T>
+	public class BinaryMappingDescriptor<T> where T : class
 	{
 		internal BinaryMapping _Mapping = new BinaryMapping();
 
@@ -60,5 +60,26 @@ public BinaryMappingDescriptor<T> CopyTo(params Expression<Func<T, object>>[] ob
 			this._Mapping.CopyTo = objectPaths.Select(e => (PropertyPathMarker)e);
 			return this;
 		}
+
+		public BinaryMappingDescriptor<T> Path(MultiFieldMappingPath path)
+		{
+			this._Mapping.Path = path.Value;
+			return this;
+		}
+
+		public BinaryMappingDescriptor<T> Fields(Func<CorePropertiesDescriptor<T>, CorePropertiesDescriptor<T>> fieldSelector)
+		{
+			fieldSelector.ThrowIfNull("fieldSelector");
+			var properties = fieldSelector(new CorePropertiesDescriptor<T>());
+			foreach (var p in properties.Properties)
+			{
+				var value = p.Value as IElasticCoreType;
+				if (value == null)
+					continue;
+
+				_Mapping.Fields[p.Key] = value;
+			}
+			return this;
+		}
 	}
 }

Diff for: src/Nest/Domain/Mapping/Types/BinaryMapping.cs

@@ -5,16 +5,12 @@
 namespace Nest
 {
 	[JsonObject(MemberSerialization.OptIn)]
-	public class BinaryMapping : IElasticType, IElasticCoreType
+	public class BinaryMapping : MultiFieldMapping, IElasticType, IElasticCoreType
 	{
-
-		public PropertyNameMarker Name { get; set; }
-
-		[JsonProperty("type")]
-		public virtual TypeNameMarker Type { get { return new TypeNameMarker { Name = "binary" }; } }
-
-		[JsonProperty("similarity")]
-		public string Similarity { get; set; }
+		public BinaryMapping()
+			: base("binary")
+		{
+		}
 
 		/// <summary>
 		/// The name of the field that will be stored in the index. Defaults to the property/field name.